Title:
ROTOR SHAFT, ELECTRIC MACHINE DEVICE, ROBOT, MOVING BODY, AND METHOD OF MANUFACTURING ROTOR SHAFT
Document Type and Number:
Japanese Patent JP2015183698
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve the torsional stiffness of a rotor shaft formed by CFRP.SOLUTION: A rotor shaft 50 can be installed with a gear wheel 500 on its outer periphery. The rotor shaft 50 has a hollow portion, is made by resin including carbon fibers, and has a large outer-diameter of an installing portion 230b on which the gear wheel 500 is installed. In the rotor shaft 50, the carbon fibers are formed as fabric fibers in which a plurality of fiber bundles intersect each other. An angle between a direction of the carbon fibers and a direction of the rotor shaft 50 is 45 degrees.
Inventors:
TAKEUCHI KESATOSHI
Application Number:
JP2014057673A
Publication Date:
October 22, 2015
Filing Date:
March 20, 2014
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
F16C3/02; H02K1/28
Domestic Patent References:
| JPH01321182A | 1989-12-27 | |||
| JP2007283892A | 2007-11-01 | |||
| JP2011020489A | 2011-02-03 | |||
| JP2012257413A | 2012-12-27 |
Attorney, Agent or Firm:
Masahiko Ueyanagi
Kazuaki Watanabe
Kazuaki Watanabe